How to allow users to have mail messages sent in encryted format?

This is using MS Exchange 2010 server. A users from finance had compiled the month-end finance reports and need to send to few of our directors. However, they don't feel comfortable of sending these reports (as file attachments) the normal way we did. They prefer whole mail sent in encrypted format, so as, only the dedicated recipient can "decrypt" and see the reports. Do Exchange 2010 have the solution out-of-box? Or else, any 3rd party software is able to serve the purpose?

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Muhammad BurhanManager I.T.Commented:
please consider the link to apply encryption on client side instead of Exchange, because if something went wrong you definitely face bothering on exchange side.

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StuartTechnical Architect - CloudCommented:
You can enable encryption to a specific domain by enabling Domain security on a send connector that is scoped to that domain. Alternatively if you have an Edge transport server you can create more detailed rules for the above using hub transport rules OR if this is just for a handful of users you could look at a product such as HP Voltage
MichaelBalackAuthor Commented:
Hi Muhammad,

Can I use nettrust ssl cert instead?
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Muhammad BurhanManager I.T.Commented:
yes, you can use SSL for E-Mails encryption.
But as you mentioned in your question that you are supposed to just encrypt emails at sending/receiving for specific user.
please apply encryption on user side first, if the user responds you happily so its better to avoid involvement of big wrappers like SSL or exchange alterations.

encryption can also be done with the transport rules.
MichaelBalackAuthor Commented:
okay, let me check
MichaelBalackAuthor Commented:
Thanks Muhammad for the suggested article. I follow all the steps and now understand how the encryption works between sender and recipient. Thanks a lot.
Muhammad BurhanManager I.T.Commented:
Thanks for response !
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